Mathematics, 08.12.2021 01:00 debrielcalderon

Ali has a bag of red, yellow and blue counters in the ratio 2:1:3 Brad has a bag of red, yellow and blue counters in the ratio 4:3:1.
Ali and Brad have 12 red counters each.
Ali takes a counter out of his bag and puts it into Brad’s bag. Brad then takes a counter out of his bag at random.
Work out the probability that they both choose a counter of the same colour.

Answers: 3

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Ali has a bag of red, yellow and blue counters in the ratio 2:1:3 Brad has a bag of red, yellow an...